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-rw-r--r--libbuild2/cc/compile-rule.cxx26
1 files changed, 17 insertions, 9 deletions
diff --git a/libbuild2/cc/compile-rule.cxx b/libbuild2/cc/compile-rule.cxx
index ce611d2..e3f1cb4 100644
--- a/libbuild2/cc/compile-rule.cxx
+++ b/libbuild2/cc/compile-rule.cxx
@@ -6328,9 +6328,14 @@ namespace build2
if (m.score <= match_max (in))
{
- const string& mn (cast<string> (bt->state[a].vars[c_module_name]));
+ // If the extraction of the module information for this BMI failed
+ // and we have deferred failure to compiler diagnostics, then there
+ // will be no module name assigned. It would have been better to
+ // make sure that's the cause, but that won't be easy.
+ //
+ const string* mn (cast_null<string> (bt->state[a].vars[c_module_name]));
- if (in != mn)
+ if (mn != nullptr && in != *mn)
{
// Note: matched, so the group should be resolved.
//
@@ -6344,7 +6349,7 @@ namespace build2
fail (relative (src))
<< "failed to correctly guess module name from " << p <<
info << "guessed: " << in <<
- info << "actual: " << mn <<
+ info << "actual: " << *mn <<
info << "consider adjusting module interface file names or" <<
info << "consider specifying module name with " << x
<< ".module_name";
@@ -6372,12 +6377,15 @@ namespace build2
if (et == nullptr)
continue; // Unresolved (std.*).
- const string& mn (cast<string> (et->state[a].vars[c_module_name]));
+ // As above (deferred failure).
+ //
+ const string* mn (cast_null<string> (et->state[a].vars[c_module_name]));
- if (find_if (imports.begin (), imports.end (),
- [&mn] (const module_import& i)
+ if (mn != nullptr &&
+ find_if (imports.begin (), imports.end (),
+ [mn] (const module_import& i)
{
- return i.name == mn;
+ return i.name == *mn;
}) == imports.end ())
{
pts.push_back (et);
@@ -6388,10 +6396,10 @@ namespace build2
// but it's probably not worth it if we have a small string
// optimization.
//
- import_type t (mn.find (':') != string::npos
+ import_type t (mn->find (':') != string::npos
? import_type::module_part
: import_type::module_intf);
- imports.push_back (module_import {t, mn, true, 0});
+ imports.push_back (module_import {t, *mn, true, 0});
}
}
}